Movement of Water in Plants

Q. What will happen if cell sap of root hair cells contain high concentration of ions? (3 Marks)

Q.

The path of water from the soil into the xylem of the root is:

1. Soil $\to$ cells of cortex $\to$ root hair $\to$ phloem

2. Soil $\to$ root hair $\to$ cells of cortex $\to$ xylem

3. Soil $\to$ root hair $\to$ xylem $\to$ cells of cortex

4. Soil $\to$ root hair $\to$ phloem $\to$ cells of cortex

Q.

With respect to the given assertion and reason, choose the correct option.
Assertion (A): Water and minerals are absorbed from roots and are transported upwards to various parts of the plant.
Reason (R): The process by which a substance absorbed from the roots of the plant is moved to the upper part of the plant is known as active transport.

1. A is correct but R is incorrect
2. A is incorrect and R is correct
3. Both A and R are incorrect
4. Both A and R are correct and R is the correct explanation of A

Q. Tissues responsible for the movement of water and food in plants are:

1. Protective tissue
2. Conducting tissue
3. Supporting tissue
4. Parenchyma

Q.

Water droplets are seen along the leaf margins of herbaceous plants during an early morning, when evaporation is low. This phenomenon is termed ________.

1. Guttation

2. Transpiration

3. Evaporation

4. Exudation

Q.

Choose the option that best describes the direction of flow of water in the plants.

1. Roots, Leaves, Vessels

2. Vessels, Leaves, Roots

3. Roots, Vessels, Leaves

4. Leaves, Vessels, Roots

Q.

In the leaves of strawberry, [shown in picture below] what causes the water droplets formation at the edge of leaf in the absence of dew in atmosphere?

1. Transpiration

2. Diffusion

3. Osmosis

4. Root pressure

Q.

How is water absorbed and transported to leaves during night?

1. By gravitational force.

2. By negative geotropism.

3. All of the above.

4. By root pressure.

Q.

The lower surface of ________ leaves will have more number of stomata on the surface.

1. isobilateral

2. thin

3. dorsiventral

4. thick

Q. Which of the following period is characterised by a biodiversity explosion with the dominance of Brachiopods ?

1. Tertiary
2. Cambrian
3. Quaternary
4. Silurian